Neutron capture cross-section measurements are fundamental in the study of astrophysical phenomena, such as the slow neutron capture (s-) process of nucleosynthesis operating in red-giant stars [1]}. This mechanism is responsible for the formation of about half of the elements heavier than iron. One prominent method to measure neutron-capture cross sections over the full stellar range of interest is the time-of-flight (TOF) technique. Here, a sample of the isotope of interest is placed in a pulsed neutron beam and the prompt capture \(\gamma \) -rays originating from the sample are registered by means of radiation detectors. Low-efficiency C\(_6\) D\(_6\)  liquid scintillators are widely used to register the capture \(\gamma \) -rays [2]}, [3]}. This type of detector, in conjunction with the pulse-height weighting technique (PHWT) [2]} allows one to virtually mimic an ideal Total Energy Detector (TED) [5]}. A TED is a detection system whose \(\gamma \) -ray detection efficiency becomes proportional to the registered \(\gamma \) -ray energy. Thanks to detailed Monte Carlo (MC) calculations [6]}, [7]}, [8]}, the working principle of the PHWT is so well under control nowadays that, generally, C\(_6\) D\(_6\)  detectors are also directly referred to as TEDs. Additionally, liquid scintillators are particularly convenient for neutron capture TOF experiments because of their of their fast time-response and low intrinsic sensitivity toscattered neutrons [3]}, [10]}, [11]}.
